# -*- coding: utf-8 -*-
"""
TencentBlueKing is pleased to support the open source community by making
蓝鲸智云 - PaaS 平台 (BlueKing - PaaS System) available.
Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
Licensed under the MIT License (the "License"); you may not use this file except
in compliance with the License. You may obtain a copy of the License at

    http://opensource.org/licenses/MIT

Unless required by applicable law or agreed to in writing, software distributed under
the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
either express or implied. See the License for the specific language governing permissions and
limitations under the License.

We undertake not to change the open source license (MIT license) applicable
to the current version of the project delivered to anyone in the future.
"""
from functools import reduce
from operator import or_

from bkpaas_auth.core.constants import ProviderType
from bkpaas_auth.models import user_id_encoder
from django.db.models import Q
from rest_framework.filters import BaseFilterBackend

from paasng.infras.accounts.constants import SiteRole
from paasng.infras.accounts.models import UserProfile
from paasng.plat_admin.admin42.serializers.accountmgr import UserProfileQueryParamSLZ
from paasng.plat_admin.admin42.serializers.application import ApplicationFilterSLZ
from paasng.platform.applications.models import Application, BaseApplicationFilter


class ApplicationFilterBackend(BaseFilterBackend):
    """Application filter"""

    def filter_queryset(self, request, queryset, view):
        if queryset.model != Application:
            raise ValueError("ApplicationFilterBackend only support to filter Application")

        # 校验 filter 参数
        query_slz = ApplicationFilterSLZ(data=request.query_params)
        query_slz.is_valid(raise_exception=True)
        query_params = query_slz.data

        return BaseApplicationFilter.filter_queryset(queryset=queryset, **query_params)


class UserProfileFilterBackend(BaseFilterBackend):
    """用户信息列表过滤器"""

    def filter_queryset(self, request, queryset, view):
        if queryset.model != UserProfile:
            raise ValueError("UserProfileFilterBackend only support to filter UserProfile")
        slz = UserProfileQueryParamSLZ(data=request.query_params)
        slz.is_valid(raise_exception=True)

        if slz.validated_data["hide_regular_users"]:
            queryset = queryset.exclude(role=SiteRole.USER.value)

        if slz.validated_data["filter_key"]:
            op = reduce(
                or_,
                [
                    Q(user__startswith=user_id_encoder.encode(type_, slz.validated_data["filter_key"]))
                    for type_ in ProviderType
                ],
            )
            queryset = queryset.filter(op)

        return queryset
